﻿using System;
using System.Text.RegularExpressions;

namespace com.igetui.api.openservice.utils
{
    internal class LangUtils
    {
        private static Regex REGEX = new Regex("^(?:(?!0000)[0-9]{4}(?:(?:0[1-9]|1[0-2])(?:0[1-9]|1[0-9]|2[0-8])|(?:0[13-9]|1[0-2])(?:29|30)|(?:0[13578]|1[02])31)|(?:[0-9]{2}(?:0[48]|[2468][048]|[13579][26])|(?:0[48]|[2468][048]|[13579][26])00)0229)$");

        public static bool validateDate(string date)
        {
            return date != null && LangUtils.REGEX.IsMatch(date) && DateTime.ParseExact(date, "yyyyMMdd", null) < DateTime.Now;
        }
    }
}
